Add AnyNode and AnyNodeRef unions (#4578)

crates/ruff_python_ast/Cargo.toml

@@ -22,6 +22,7 @@ once_cell = { workspace = true }
 rustc-hash = { workspace = true }
 rustpython-literal = { workspace = true }
 rustpython-parser = { workspace = true }
+rustpython-ast = { workspace = true }
 serde = { workspace = true, optional = true }
 smallvec = { workspace = true }
 

crates/ruff_python_ast/src/lib.rs

@@ -6,6 +6,8 @@ pub mod hashable;
 pub mod helpers;
 pub mod imports;
 pub mod newlines;
+pub mod node;
+pub mod prelude;
 pub mod relocate;
 pub mod source_code;
 pub mod statement_visitor;

crates/ruff_python_ast/src/prelude.rs

@@ -0,0 +1,2 @@
+pub use crate::node::AstNode;
+pub use rustpython_ast::*;